gtk2_ardour/editor_timefx.cc

   1 /*
   2     Copyright (C) 2000 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <cstdlib>
  21 #include <cmath>
  22
  23 #include <string>
  24
  25 #include <pbd/error.h>
  26 #include <pbd/pthread_utils.h>
  27 #include <pbd/memento_command.h>
  28
  29 #include <gtkmm2ext/window_title.h>
  30
  31 #include "editor.h"
  32 #include "audio_time_axis.h"
  33 #include "audio_region_view.h"
  34 #include "region_selection.h"
  35
  36 #include <ardour/session.h>
  37 #include <ardour/region.h>
  38 #include <ardour/audioplaylist.h>
  39 #include <ardour/audio_track.h>
  40 #include <ardour/audioregion.h>
  41 #include <ardour/audio_diskstream.h>
  42
  43 #include "i18n.h"
  44
  45 using namespace ARDOUR;
  46 using namespace PBD;
  47 using namespace sigc;
  48 using namespace Gtk;
  49 using namespace Gtkmm2ext;
  50
  51 Editor::TimeStretchDialog::TimeStretchDialog (Editor& e)
  52         : ArdourDialog ("time stretch dialog"),
  53           editor (e),
  54           quick_button (_("Quick but Ugly")),
  55           antialias_button (_("Skip Anti-aliasing"))
  56 {
  57         set_modal (true);
  58         set_position (Gtk::WIN_POS_MOUSE);
  59         set_name (N_("TimeStretchDialog"));
  60
  61         WindowTitle title(Glib::get_application_name());
  62         title += _("Timestretch");
  63         set_title(title.get_string());
  64
  65         get_vbox()->set_spacing (5);
  66         get_vbox()->set_border_width (5);
  67         get_vbox()->pack_start (upper_button_box);
  68         get_vbox()->pack_start (progress_bar);
  69
  70         upper_button_box.set_homogeneous (true);
  71         upper_button_box.set_spacing (5);
  72         upper_button_box.set_border_width (5);
  73         upper_button_box.pack_start (quick_button, true, true);
  74         upper_button_box.pack_start (antialias_button, true, true);
  75
  76         action_button = add_button (_("Stretch/Shrink it"), Gtk::RESPONSE_ACCEPT);
  77         cancel_button = add_button (_("Cancel"), Gtk::RESPONSE_CANCEL);
  78
  79         quick_button.set_name (N_("TimeStretchButton"));
  80         antialias_button.set_name (N_("TimeStretchButton"));
  81         progress_bar.set_name (N_("TimeStretchProgress"));
  82
  83         show_all_children ();
  84 }
  85
  86 gint
  87 Editor::TimeStretchDialog::update_progress ()
  88 {
  89         progress_bar.set_fraction (request.progress);
  90         return request.running;
  91 }
  92
  93 void
  94 Editor::TimeStretchDialog::cancel_timestretch_in_progress ()
  95 {
  96         status = -2;
  97         request.running = false;
  98 }
  99
 100 gint
 101 Editor::TimeStretchDialog::delete_timestretch_in_progress (GdkEventAny* ev)
 102 {
 103         status = -2;
 104         request.running = false;
 105         return TRUE;
 106 }
 107
 108 int
 109 Editor::run_timestretch (RegionSelection& regions, float fraction)
 110 {
 111         pthread_t thread;
 112
 113         if (current_timestretch == 0) {
 114                 current_timestretch = new TimeStretchDialog (*this);
 115         }
 116
 117         current_timestretch->progress_bar.set_fraction (0.0f);
 118
 119         switch (current_timestretch->run ()) {
 120         case RESPONSE_ACCEPT:
 121                 break;
 122         default:
 123                 current_timestretch->hide ();
 124                 return 1;
 125         }
 126
 127         current_timestretch->status = 0;
 128         current_timestretch->regions = regions;
 129         current_timestretch->request.fraction = fraction;
 130         current_timestretch->request.quick_seek = current_timestretch->quick_button.get_active();
 131         current_timestretch->request.antialias = !current_timestretch->antialias_button.get_active();
 132         current_timestretch->request.progress = 0.0f;
 133         current_timestretch->request.running = true;
 134
 135         /* re-connect the cancel button and delete events */
 136
 137         current_timestretch->first_cancel.disconnect();
 138         current_timestretch->first_delete.disconnect();
 139
 140         current_timestretch->cancel_button->signal_clicked().connect (mem_fun (current_timestretch, &TimeStretchDialog::cancel_timestretch_in_progress));
 141         current_timestretch->signal_delete_event().connect (mem_fun (current_timestretch, &TimeStretchDialog::delete_timestretch_in_progress));
 142
 143         if (pthread_create_and_store ("timestretch", &thread, 0, timestretch_thread, current_timestretch)) {
 144                 current_timestretch->hide ();
 145                 error << _("timestretch cannot be started - thread creation error") << endmsg;
 146                 return -1;
 147         }
 148
 149         pthread_detach (thread);
 150
 151         sigc::connection c = Glib::signal_timeout().connect (mem_fun (current_timestretch, &TimeStretchDialog::update_progress), 100);
 152
 153         while (current_timestretch->request.running) {
 154                 gtk_main_iteration ();
 155         }
 156
 157         c.disconnect ();
 158
 159         current_timestretch->hide ();
 160         return current_timestretch->status;
 161 }
 162
 163 void
 164 Editor::do_timestretch (TimeStretchDialog& dialog)
 165 {
 166         Track*    t;
 167         boost::shared_ptr<Playlist> playlist;
 168         boost::shared_ptr<Region>   new_region;
 169
 170         for (RegionSelection::iterator i = dialog.regions.begin(); i != dialog.regions.end(); ) {
 171                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 172                 if (!arv)
 173                         continue;
 174
 175                 boost::shared_ptr<AudioRegion> region (arv->audio_region());
 176                 TimeAxisView* tv = &(arv->get_time_axis_view());
 177                 RouteTimeAxisView* rtv;
 178                 RegionSelection::iterator tmp;
 179
 180                 tmp = i;
 181                 ++tmp;
 182
 183                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (tv)) == 0) {
 184                         i = tmp;
 185                         continue;
 186                 }
 187
 188                 if ((t = dynamic_cast<Track*> (rtv->route().get())) == 0) {
 189                         i = tmp;
 190                         continue;
 191                 }
 192
 193                 if ((playlist = t->diskstream()->playlist()) == 0) {
 194                         i = tmp;
 195                         continue;
 196                 }
 197
 198                 dialog.request.region = region;
 199
 200                 if (!dialog.request.running) {
 201                         /* we were cancelled */
 202                         dialog.status = 1;
 203                         return;
 204                 }
 205
 206                 if ((new_region = session->tempoize_region (dialog.request)) == 0) {
 207                         dialog.status = -1;
 208                         dialog.request.running = false;
 209                         return;
 210                 }
 211
 212                 XMLNode &before = playlist->get_state();
 213                 playlist->replace_region (region, new_region, region->position());
 214                 XMLNode &after = playlist->get_state();
 215                 session->add_command (new MementoCommand<Playlist>(*playlist, &before, &after));
 216
 217                 i = tmp;
 218         }
 219
 220         dialog.status = 0;
 221         dialog.request.running = false;
 222         dialog.request.region.reset ();
 223 }
 224
 225 void*
 226 Editor::timestretch_thread (void *arg)
 227 {
 228         PBD::ThreadCreated (pthread_self(), X_("TimeFX"));
 229
 230         TimeStretchDialog* tsd = static_cast<TimeStretchDialog*>(arg);
 231
 232         pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
 233
 234         tsd->editor.do_timestretch (*tsd);
 235
 236         return 0;
 237 }
 238